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' 3 H S-$32M 1.

v PAENTEDMax/13 6 1.3. WIGGENJEORN; H MACHINE FOR THREADING BOLTS, m;

'. hereby declare that-the followingis a full, clear, and

,accompanyingdimviugs, tlon, in -which-#- Figure 1, Shoe riwndnmchinc. 1

'- Figure 2, sheet 2, iso section through part of theiuaohine, taken inthe line 2 z in fig. 1.

threading-dies.

iii-out part oi'thc machine. Similar letters ofreference-indicatecorresponding :{ifid'tfi in thescvcral figures.

" which will innctically produce Iiictnl screws by swagcondensing 'andrenloring'the'metal to-lcnve the thrcnds'..-

numbered 66,568, were granted to E. Omfi; on the 9th day of July,;1867,wherein a single circular swagin-gdid-having helical tin-ends formed onits periphery,

*from an inverted U-shcpc.

1 0 which are vertically adjustable, and which uiior d heurings for twohorizontal shafts O that arc-or I that is horizontally adjustable.

lower shalt 0.

' JOSEPH sl' 'wlooh nnosn,

OF ST. "LOUIS,- MIssoUnL Lateral-"Patent No. 96,372, m: Ndiwmbfl? 2,mos.-

miss this 'rsmssmrm some, a

Tho Schedule referred to in thos'o Letters Patent nud naaking part-oithe suns.

To all z vhom it-nmy-conccrnr 3 v Be it known th'at'li, J OSEEHB.'2W1ocsnnonx, of St. Louis, iii-the county-of St. I)nis,'sud State ofMissouri,hsve iuvented snow and improved Machine for Swaging screw'lhreads upon Bolts; and .-I do cxactdescription, thereof, referencebeing had to the p I making part of this specifics t 1, is frontelevation .oflthoilm reiticnl plane indicated by red Figure. 8,*sheet'l, is a iew of one ofthe circular F-igur'e 4, sheet 3,:is a'pl anview I of o no part of the machine, and alssctional View taken in thehorizontal piano indicated by rcd'line 31 y in fig. 1, through the Theobject of this invention is to obtain a rniichine ing the threads uponthe round bars or bolts, and thus hcjrnetal instead oi'cuttiugout thegrooves,"

-' I am awn-re that Letters Patentof the United'St-dtes,

was employed in conjunction withfixe'd' segments, whiclnlatter, it wasnlieged, ivcuhl hold the blanks up to the worhofi'orining the threads.'ao; uot,therefore, claim, as my invention, the devices shown 'iu-Oroitspatent.

To enable others skill'c'din thenr'ttonnderstand my iu'vention,'l willdcscribe'it-s construction and 011-' crstionui 1" luthe accompanyingdmwing's- 1 3 Areprcsents'the' foundation or bed of the machine,

7 hich ris-s pcrpeinliculurly two standards B B, of

'. These standards rcceircibur journal-boxes O 0' O Ifzillgd in-t-hcsanie-vhrticnl plane.

On the righ t lhnid sides of the two standards B B, brackets aca-reiorrned, for receivingjournal-boxes K K, whichhiford'benrings forfahorizontal shaft, K,

The journal-boxes O G of the upper shaft O abut against the upper cndspftheir respective standards, and are sustained upon strong elasticcushions S, which rest upon the upper cnds of the boxes 0' 0 of thetheir shaft, in the The lower boxes C C are suppdrt'cd 'upon-gihs H, p

and secured-in the required position bykeys. Hdriver.

tmnsverselythrongh the legs of standards 1 The journal-boxes K K, whichare supportcdiin' ,hrackets mm, are laterally adj nstahle, and areprovided with screw-ahutments kit, for keeping said boxes in requiredposition, with. relation to the two shafts O O.

' On the reare'nd ofthe nppershaft O,-a-belt-wheel, 'I, is keyed, forreceiving rotary motion from at driving shaft through the mediumoi' 'abelt. l 7

On this shaft 0, a pinion spur-wheel, J, and zit-larger spur-wheel, J,are also kcycd, Wheel J engages with a. spur-wheel, J, corresponding indiarhcthr: to on ,the sideshaft K. 1 I 1 On this shaft K, spur-wheels'J'.J"3I8iil50k8yed,

one of which, J, engages withwheel J, and the other, J, engages with thespur wheel .1, which-is keyed on thelowermostshait O. v

:By this arrangement of gesrihg'ftne O are rotated in the somedirection, undat a'n'equal'speed.

"On the front cndsoi the-tivo shafts'O O,,t wo-circular screw-threadhwagingdics L Lure firmly keyed,

and confined-by means of the'nuts'D D. 'ifhese; diesare ofequaldiameter, and sire inall respects exactly alike. i

Each die hasfn soor'e or groove, 7;, cut ti'snsvcrsely into itsperiphery, aucl -.each.riie'hns tbrmediupon its periphery helicalscrewthreads c,whichhavc the some 'angle or lake-as it is required tohave-tho threads upon the, screw holts which are thjreacledby thesedies.The-shape ofthese'thrends 0 should alspcorrespond frcvels'ely with thethreads oftlie proposed screw-bolts,

and these threnilsfshould be of diii'sreut ln-gths, so thjatduringtheoperntion of the threading,- the longest thread will first operctc,then the succeeding shorter one, and so on, through the entire'nurnhcrofthreads '0, until th'e dies have each made a completerevolution. vThis drinn'gement of the threads-c is showh clearly in fig. 3, sheet 2-,and is considered important, for the 'reasonfthat if .the fullnumber ofthreads were caused to operntc upon a blank at the commencement ofswaging, the pressure would he so. great that the. blanks would heinjured by the crushing of the metal.

The dies L L are arranged on their respective shafts, so as to insure aconst-nnt return to each other of the corresponding point-son them,andthe waging-threads on both dies are so arranged. as to c'o-operatewith each other in producingthe threads upon thoholts.

The threads commence at points ncar'the scores-bb, and terminate at theopposite sides of these scores,

as shown in fig. 1.".

Thedics L-Lnre, adjusted, so that thc'space between i their peripheries,at the point where the swagiug is done, is exactly equal to the diameterof the bolts which. itis desired to operate upon. v

